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https://github.com/alfg/mp4-rust.git
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121 lines
2.9 KiB
Rust
121 lines
2.9 KiB
Rust
use byteorder::{BigEndian, WriteBytesExt};
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use serde::Serialize;
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use std::io::Write;
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use crate::mp4box::*;
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#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize)]
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pub struct VmhdBox {
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pub version: u8,
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pub flags: u32,
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pub graphics_mode: u16,
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pub op_color: RgbColor,
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}
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#[derive(Debug, Clone, PartialEq, Eq, Default, Serialize)]
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pub struct RgbColor {
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pub red: u16,
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pub green: u16,
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pub blue: u16,
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}
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impl VmhdBox {
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pub fn get_type(&self) -> BoxType {
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BoxType::VmhdBox
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}
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pub fn get_size(&self) -> u64 {
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HEADER_SIZE + HEADER_EXT_SIZE + 8
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}
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}
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impl Mp4Box for VmhdBox {
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const TYPE: BoxType = BoxType::VmhdBox;
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fn box_size(&self) -> u64 {
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self.get_size()
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}
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fn to_json(&self) -> Result<String> {
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Ok(serde_json::to_string(&self).unwrap())
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}
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fn summary(&self) -> Result<String> {
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let s = format!(
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"graphics_mode={} op_color={}{}{}",
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self.graphics_mode, self.op_color.red, self.op_color.green, self.op_color.blue
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);
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Ok(s)
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}
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}
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impl BlockReader for VmhdBox {
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fn read_block<'a>(reader: &mut impl Reader<'a>) -> Result<Self> {
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let (version, flags) = read_box_header_ext(reader);
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let graphics_mode = reader.get_u16();
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let op_color = RgbColor {
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red: reader.get_u16(),
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green: reader.get_u16(),
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blue: reader.get_u16(),
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};
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Ok(VmhdBox {
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version,
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flags,
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graphics_mode,
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op_color,
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})
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}
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fn size_hint() -> usize {
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12
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}
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}
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impl<W: Write> WriteBox<&mut W> for VmhdBox {
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fn write_box(&self, writer: &mut W) -> Result<u64> {
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let size = self.box_size();
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BoxHeader::new(Self::TYPE, size).write(writer)?;
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write_box_header_ext(writer, self.version, self.flags)?;
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writer.write_u16::<BigEndian>(self.graphics_mode)?;
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writer.write_u16::<BigEndian>(self.op_color.red)?;
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writer.write_u16::<BigEndian>(self.op_color.green)?;
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writer.write_u16::<BigEndian>(self.op_color.blue)?;
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Ok(size)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::mp4box::BoxHeader;
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#[test]
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fn test_vmhd() {
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let src_box = VmhdBox {
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version: 0,
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flags: 1,
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graphics_mode: 0,
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op_color: RgbColor {
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red: 0,
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green: 0,
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blue: 0,
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},
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};
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let mut buf = Vec::new();
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src_box.write_box(&mut buf).unwrap();
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assert_eq!(buf.len(), src_box.box_size() as usize);
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let mut reader = buf.as_slice();
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let header = BoxHeader::read_sync(&mut reader).unwrap().unwrap();
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assert_eq!(header.kind, BoxType::VmhdBox);
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assert_eq!(src_box.box_size(), header.size);
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let dst_box = VmhdBox::read_block(&mut reader).unwrap();
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assert_eq!(src_box, dst_box);
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}
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}
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